1171658879 has 8 divisors (see below), whose sum is σ = 1178657568. Its totient is φ = 1164671200.

The previous prime is 1171658849. The next prime is 1171658933. The reversal of 1171658879 is 9788561711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1171658879 - 2⁸ = 1171658623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1171658879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171658809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314729 + ... + 318429.

It is an arithmetic number, because the mean of its divisors is an integer number (147332196).

Almost surely, 2^1171658879 is an apocalyptic number.

1171658879 is a deficient number, since it is larger than the sum of its proper divisors (6998689).

1171658879 is a wasteful number, since it uses less digits than its factorization.

1171658879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5505.

The product of its digits is 846720, while the sum is 53.

The square root of 1171658879 is about 34229.5030492702. The cubic root of 1171658879 is about 1054.2260157275.

The spelling of 1171658879 in words is "one billion, one hundred seventy-one million, six hundred fifty-eight thousand, eight hundred seventy-nine".